Brush-making machine.



H. M. SCHWARTZ.

BRUSH MAKING MACHINE. APPLICATION FILED MAR. 2, 190a.

Patented July 20, 1909.

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UNITED sTAT sPATENT ormon.

HERMAN M. SCHWARTZ, 01* NORTHAMPTON, MASSACHUSETTS, ASSIGN OR TO THE FLORENCE MANUFACTURING GOMPAN Y, OF NORTHAMPTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

BRUSH-MAKING MACHINE;

. Specification of Letters Patent.

, Patented July 20, 1909.

' Application filed March 2, 1908. Serial No. 418,668.

To all whom it may concern:

Be it known that I, HERMAN M. SCHWARTZ, a citizen of the United States, residing at Northampton, county of Hampshire, State of Massachusetts, have invented certain new and useful Improvements in Brush- Making Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

In brush making machines of the general type known as the Gane machine, the bristles require to be formed into'tufts or knots each of which should contain the same quantity of bristles. This result is essential to the production of the best brushes and to the rapidity of action of the machine. It is, therefore, necessary that the size of each knot or tuft be determined with the greatest nicety. Considerable difliculty has heretofore been experienced on this account with machines of this kind, and this has resulted in the uneven filling of the brush backs, some of the knots or tufts being filled so full art of the'bristles are broken or cut ofl w on the kriot *or tuft is inserted in the hole and subs'equently come out, While knot produced so that any variation in the size and texture of the bristles may be compensated'for if desired. v

My invention affords means for regulating with great nicety the size tufts of bristles supplied by the knot separating mechanism to the knot setting mechanism. The means provided is ex tremely simple and efieotive, is under the easy control of the operator, it being: ossr'ele to adjust the size of the knot while he machine is in o eration, and is not likely to get out of on er.

The device embodying my invention does not depend for its action upon a lateral cornression of the stream of bristles in the bristle-feeding channel, nor u on any constriction of said channel whic1 for various reasons is objectionable and tends to irregular and imperfect operation of the machine, but .011 the contrary the bristle feeding channel is open to its full width at all times.

While I have shown my device in the accompanying drawing as applied .to bristle of the knots or,

feeding mechanism of a Gane machine of the ordinary well known construction, it is obvious that it may be employed upon any machine in which a stream of bristles is fed through a passageway in which the bristles from the following description taken in connection with the accompanying drawing,

and the novel features will be pointed out p and clearly defined in the claims at the close of the specification.

In the drawings, Figure 1 is a planv view of a ortion of a brush stapling machine to whic my invention has been applied. Fig. 2 is an elevation of the parts shown in Fig. 1.

Referring to the drawing,t here is shown at A a portion of the table of the machine in which a channel B is formed. The bristles O ass through the channel B to the knot pidlqer D and finger E by means of which the stream of bristles O is separated into knots or tufts and transferred to the tuft setting mechanism. The said knot picker. D and finger E slide in a groove H in the drawing by a dotted line- At F is shown the reciprocating rake by means of which the stream of bristles O is forced forward through the passage B.

The parts thus far described are old and well known to those skilled in this art, and form no part of my invention.

The corner G of the table A at the orificeof-the passa e-B is very slightly rounded,

and the. brist es O pass around this corner G to the'ineclianism which transfers them to the tuft setting mechanism. Opposite to the mouth or orifice of the channel B, I place a pivoted gate I provided with a face of pecuhar shape by means of which the size of the knot 0r tuft of bristles delivered to the knot picker D is determined. On said gate I 1s a projection K, one, face of which L is substantially in line with the left hand side of the channel B. The portion M of the face of the gate I.-which is op osite the orifice of the channel B, is en stantially at right angles to the line of the channel and is movable toward or away from the mouth of the channel B, and the position of this face M with relation to the mouth of the channel B determines the size of the tuft or knot of bristles; The position of the said gate I is accurately controlled by means of a micromemicrometer screw ter screwN and a spring 0 serves to hold the gate I against the head of the said- N. It will be seen therefore,v that by turning the micrometer screw N, the position of the gate and accordingly the size of the tuft may be determined wit extreme nicety. Another reason for use of a micrometerscrew is that having once determined the osition of the gate by the numbered gra uations on the micrometer for producing a tuft or knot of given size, tufts or knots'of the same size may subsequently be produced by setting the micrometer screw in the same position as previously. When the parts of the machine are in the osition shown in the drawing, the bristles 1n the channel B are forced forward by the rake F until they occupy substantially the position shown in the drawing; that is, a portion .of the bristles have been forced through the mouth of the channel B and stand in the line of the knot picker D so that when the knot icker D advances, it takes all the bristles w 'ch are outside of the chan nel B to form the tuft. If the gate I is at a greater distance from the mouth of thechannel B, more bristles are ermitted to be forced forward from the sald channel Band the number of bristles picked up by the knot icker to form the tuft is corres ondingly arger. In the same manner, if t e gate I is brought closer to the mouth of the channel B, the number of bristles picked u by the knot picker is correspondingly smal er.

It will beseen that the device embodying i my-invention does not de' end for its action on any constriction of t e bristle feeding channel B, but rather upon the number of bristles which are permitted to extrude from the orifice of the bristle feeding channel. By this means the dangerof clogging the bristle feeding channel 18 greatly lessened, and the accuracy of the size of knot is considerably increased.

I claim as my invention:

1. In a brush making machine, the combination with abutments forming a bristle feeding channel, of apivoted gate having a face at right angles to the line of motion of ,the bristles in said bristle feeding channel and op osite' to the orifice thereof, and means or moving said gate with relation to said orifice.

2. In a brush making machine, the combination with abutments forming a bristle feeding channel, of a movable gate having a face at right angles to the line of motion of the bristles in said bristle feeding channel HERMAN M. SCHWARTZ.

Witnesses GEORGE P. DIKE, Amen H. M0nmsoN.-

and opposite to the orifice thereof, and a 

